Chapter 5 Installation and Wiring
98
5.3 Wiring of Primary Power Source
Observe the following precautions when wiring the primary power source of the
controller:
(1) Connect the robot power cable to a power source separate from the welder
power source.
(2) Ground the protective grounding wire (green/yellow) of the robot power cable
securely.
(3) Ground the functional grounding terminal of the robot controller using a wire of
1.25 mm
2
or more in size.
(4) For the robot power supply, use a protective grounding wire with grounding
resistance of 100Ω or less.
(5) If the supply power source for the controller requires a leakage breaker, use a
high frequency-proof leakage breaker for inverters.
(6) When inserting a circuit breaker between the robot and the AC input power
supply, select the circuit breaker with breaking capacity higher than the following
specification.
Recommended circuit breaker example:
CP33V/20 (Fuji Electric FA Components & Systems Co., Ltd.)
Caution: Using a circuit breaker with breaking capacity lower than
the following specification may cause the circuit breaker
to be shut down due to robot operation.
Circuit Breaker Characteristics
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